Active Aqua 1/2" ID Black Tubing 100'Description Sturdy Black Vinyl Tubing: FDA approved and BPA free, this tubing is ideal for irrigation systems and tanks, as well as for creating your own hydroponic systems. Despite being easy to cut to size, the material remains strong and reliable. We offer six different 100 foot sizes, each available in a convenient dispenser pack. Always have a roll at hand for immediate access to repairs. Dimensions: Inside Diameter: . 5" Outside Diameter: . 65"